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BLK BOX Samson Adjustable Jammer Arms

SKU: 21-1006

The BLK BOX Samson Adjustable Jammer Arms were designed with high performance in mind. Made from start to finish in Belfast, the Adjustable Jammer Arms can be quickly and easily adjusted to the athletes desired height using the secure and durable pull-pin and roller system. Adding Jammer Arms to your facility or gym opens an endless range of dynamic, complex, explosive and isometric movements to be added to your training. Movements such as incline, decline and flat bench press, along with shoulder press, rows, jammer press, shrugs, squats and deadlifts.

The BLK BOX  Samson Adjustable Jammer Arms were designed with high performance in mind. Manufactured from start to finish in our Belfast HQ, these Jammer Arms not only  offer  a range of additional movements, but their modular capability saves valuable floor space.

The addition of the BLK BOX Samson Adjustable Jammer Arms to a facility opens an endless array of dynamic, complex, explosive or isometric training options. These include but are not limited to incline, decline and flat bench press, along with shoulder press, rows, jammer press, shrugs, squats and deadlifts.

A key offering of the Adjustable Arms is they allow athletes to perform explosive movements with  greater control  and  stability  when compared to similar free weight movements. The athlete can be placed in the optimum position to ensure correct form throughout the range of movement.

Another advantage of their independent design means they can be used for bilateral and unilateral training, allowing athletes to isolate weaknesses or correct in-balances, while also providing a option for athletes new to training or undergoing recovery, and require a fixed or limited range of motion.

Compatible  with all Samson Rigs & Racks, the Adjustable Jammer Arms  can be quickly and easily detached, and then  rolled up or the upright to a height of the athletes choosing, before being reattached. When in position, each Jammer Arm is held using a bespoke designed pull pin, in partnership with a high tensile locating pin for extra security. This spring loaded pull pin snaps back into place at the selected height. A high density rubber bump stop has been added to the rear of the arm to cushion any impact on the uprights.

The arm of each Jammer Arm is manufactured using the same 80x80mm laser-cut steel as our Samson Uprights. In addition it features the same 4-way hole pattern as the uprights, allowing Samson Rig and Rack Attachments to be added you to attach J-Hooks and utilise the arms as a Monolift attachment.  This modular design also allows the handles to be moved up and down the Jammer arm to any desired height. Combined with the ability to roll up and down the upright, there is an endless possibility of setups.

Designed and made in Belfast, each component of the Samson Adjustable Jammer Arm has been meticulously designed, tested, and improved to  offer maximum performance and durability.  Each arm rotates on a combination of solid high tensile chrome bar, and durable self-lubricating roller bearings. The Jammer Arm rolls up and down the upright utilising high impact acetal rollers and high speed bearings, together they offer fast and smooth adjustment. Alongside internal nylon plating of the bracket, the acetal rollers are designed to ensure no scraping of your paintwork. The bracket wrapping around the upright is constructed of durable 10mm laser-cut mild-steel, and features a 30mm diameter zinc-plated handle with 1.2mm knurl. This extra grip ensures no issues when adjusting.  

Furthermore, the detachable handle offers an ergonomic 30mm grip, perfect for pulling, pressing and many other movements. This handle features a zinc-plated weight pin, capable of holding 120kg of BLK BOX HD or Colour HD Bumpers. This handle also offers 4 different grip positions; low, high, neutral and 45 degrees.

All components on the BLK BOX Samson Adjustable Jammer Arms are machined, fabricated, welded, powdercoated  and assembled at BLK BOX HQ in Belfast. All handles, bearing housings, pins rollers and weight pins are machined on our CNC high precision machines. A high number of parts are welded using our robot welder, while some parts require the detailed touch of our in-house welding team.    

Please Note: This product has a lead time of 25-30  working days.

Key Features:

    • Designed and made in Belfast
    • High impact acetal rollers and high speed bearings allows quick and easy height setting
    • Modular design allows addition of Samson Rig and Rack Attachments
    • Each arm capable of holding 120kg   of  BLK BOX HD  or  Colour HD Bumpers
    • Double pin locking system for  additional security
    • Independent design allows bilateral and unilateral training
    • 10mm laser-cut mild-steel mounting bracket
    • Rubber bump stop to  limit impact on uprights
    • Four grip options for different training stimulus
    • Detachable handle for multiple height settings
    • Self-lubricating roller bearings for smooth movement
    • Textured powdercoat finish


Grip Positions High, Low, Neutral and 45 degrees
Handle Diameter All handles 30mm
Material and Finish

Laser cut mild steel arm and bracket

Zinc plated steel weight pin

Zinc plates and knurled adjuster handle

Bespoke steel pull pin

High tensile steel  locking pin

High impact acetal rollers and nylon plating

Plate Capacity  

Each arm can hold:  

120kg of  BLK BOX HD  or  Colour HD Bumpers,  or

140kg  BLK BOX  Competition Plates, or

55kg of  BLK BOX Impact Bumpers, or

85kg of BLK BOX Blackout Bumpers

Arm Length 1236 mm
Overall Length 1290 mm each arm
Overall  Width 190 mm each arm
Overall  Depth
215 mm each arm when in rest
Weight 30.7kg each arm

How do I adjust the height of the Adjustable Jammer Arms?

The Adjustable Jammer Arms are quickly adjusted by  removing the locking pin, before pulling the pull pin out, selecting your desired height, then releasing the pull pin, and replacing the locking pin.

What are they compatible  with?

The Samson Adjustable Jammer Arms are compatible with all Samson Rigs & Racks, can can be retrofitted to any existing Samson setup. Their modular design also allows any  Samson Rig and Rack Attachments  to be added to them.  

How much weight can I add?

The Samson Adjustable Jammer Arms are each capable of holding 120kg of  BLK BOX HD  or  Colour HD Bumpers,  or 140kg  BLK BOX  Competition Plates, or 55kg of BLK BOX Impact Bumpers, or 85kg of BLK BOX Blackout Bumpers.

    Do I need the Locking Pin?

    We would  strongly  recommend  having the locking pin in the bracket during usage of the Samson Adjustable Jammer Arms

    We aim to dispatch and deliver all in stock items within 2-10 working days depending on your location in the UK & Ireland.


    We ship our orders via Parcel / 2 Man Delivery or Pallet depending on the size of your order and shipping fees will be calculated at checkout. To track your order click here for orders placed online; Track an Online Order and here for orders placed via our Sales team; Track an Offline Order.


    All deliveries are kerbside, it will be your responsibility to remove the items from the pallet on arrival and dispose of the pallet. You will receive an email from our Logistics team with a date of delivery.   If you require an alternative delivery date or if there are any access restrictions to your property, please let us know within 24 hours before delivery by emailing Please be aware failure to do so may result in additional delivery charges.


    Some of our training equipment is manufactured here in our HQ. The lead times on these products range from 10-25 working days and are identified by having the MADE IN BELFAST badge.


    We understand at times due to size, colour or type some items might not be the right fit for you. We are happy to accept a returned item within 30 days from the date of you receiving the item for a refund or exchange.

    To start a return click here; BLK BOX Returns.


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